diff --git a/pom.xml b/pom.xml
index a092668708..48be902cf5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1060,7 +1060,7 @@
             <dependency>
                 <groupId>com.thoughtworks.xstream</groupId>
                 <artifactId>xstream</artifactId>
-                <version>1.4.20</version>
+                <version>1.4.21</version>
                 <exclusions>
                     <exclusion>
                         <groupId>io.github.x-stream</groupId>